Mars' Jazero mudstones with "leopard spots" and "poppy seeds" markings: the most compelling potential biosignature to date, pending Earth analysis from a future sample-return mission.
To the point
Joel Hurowitz says the Jazero mudstones could be a biosignature from ancient lakes, Sanjeev Gupta cautions that natural geology could mimic them, Nicola Fox notes the finding is significant but needs Earth-based analysis from a future sample return, and Perseverance is storing rocks on Mars as NASA and partners weigh a return plan amid budget pressures and China’s 2028 ambitions.
